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Later, the idea that hysteria was responsible for the symptoms after a mild head injury was suggested by Charcot. [18] [72] Controversy about the syndrome continued through the 20th century. [72] During World War I many soldiers with puzzling symptoms after being close to a detonation but without any evidence of a head wound.
Second-impact syndrome (SIS) occurs when the brain swells rapidly, and catastrophically, after a person has a second concussion before symptoms from an earlier one have subsided. This second blow may occur minutes, days, or weeks after an initial concussion, [ 1 ] and even the mildest grade of concussion can lead to second impact syndrome. [ 2 ]
A concussion, also known as a mild traumatic brain injury (mTBI), is a head injury that temporarily affects brain functioning. [8] Symptoms may include headache, dizziness, difficulty with thinking and concentration, sleep disturbances, mood changes, a brief period of memory loss, brief loss of consciousness; problems with balance; nausea; blurred vision; and mood changes.
Late symptoms can occur days to weeks after the initial injury, although headaches and dizziness can persist well into the "late stage" as well. [7] RPQ-3 symptoms are regarded as the more "physical" symptoms, whereas the RPQ-13 set of symptoms are considered to have a more significant impact on psychic and social function.
Delayed onset of symptoms may occur a few hours or days after the injury. The delayed symptoms involve all the physical, emotional and cognitive changes. The symptoms of pediatric concussion can differ between babies, toddlers and older children. Babies, aged from birth to one-year-old, are usually unable to communicate their pain or emotions ...
“Black eye, orbital bone, passed out. Bad, bad, bad stuff,” Glenn recalled of the 2020 incident. Glenn is positive she endured other concussions as a young skater.
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But the recovery time can vary. Up to about 1/3 of people experience persisting symptoms after concussion (PHAC) or persistent post concussion symptoms (PPAC), defined as symptoms that last more than 4 weeks. [5] [6] [7] After an injury, concussion symptoms can begin immediately or be and delayed by 1-2 days at most. [8]